Dancing Bear Rock and Mineral Educational Collection & Collection Box -18 Pieces with Description Sheet and Educational Information. Limited Edition, Geology Gem Kit for Kids with Display Case, Brand 18 pc collection of rocks and minerals and an acrylic collection box. Color identification guide and information about each stone. Includes Mohls Hardness Chart with explanation of chart. Educational set the for the rock collector, teacher or anyone who loves rocks. Full Money back Guarantee-If you are unhappy with the collection-you will receive your money back including shipping both ways. Check out the other Dancing Bear rock and mineral collections.